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USMLE/1
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Textbook
1. Anatomy
2. Microbiology
2.1 General bacteriology
2.2 Introduction to systemic bacteriology
2.3 Gram positive cocci
2.4 Gram negative cocci
2.5 Gram positive bacilli
2.5.1 Introduction
2.5.2 Bacillus anthracis
2.5.3 Bacillus cereus
2.5.4 Clostridium tetani
2.5.5 Clostridium botulinum
2.5.6 Clostridium perfringens
2.5.7 Clostridium difficile
2.5.8 Corynebacterium diphtheriae
2.5.9 Listeria monocytogenes
2.6 Gram negative bacilli
2.7 Other important bacteria
2.8 Virology
2.9 Parasitology
2.10 Mycology
3. Physiology
4. Pathology
5. Pharmacology
6. Immunology
7. Biochemistry
8. Cell and molecular biology
9. Biostatistics and epidemiology
10. Genetics
11. Behavioral science
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2.5.1 Introduction
Achievable USMLE/1
2. Microbiology
2.5. Gram positive bacilli

Introduction

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Gram positive bacilli of medical importance are Clostridia,Bacillus species, Listeria and Corynebacteria. Actinomycetes and Nocardia are also gram positive, branching filamentous bacteria, we will be discussing them later on along with Mycobacteria.

Bacteria of the genera Bacillus and Clostridia form endospores that contain dipicolinic acid. The spore is highly resistant to extreme environmental conditions being resistant to heat, freezing, drying and radiation and can exist in the environment for thousands of years or more.

Diagnosis of gram positive rods
Diagnosis of gram positive rods

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